降水对PC工法组合桩围堰变形的影响研究  

INFLUENCE OF DEWATERING ON DEFORMATION OF PC COMPOSITE PILE COFFERDAM

作　　者：冯丹丹 刘兴文 高俊 吕明明 王清标[2] 段家宁 Feng Dan-dan;Liu Xing-wen;Gao Jun;Lyv Ming-ming;Wang Qing-biao;Duan Jia-ning

机构地区：[1]中铁十四局集团第二工程有限公司,山东泰安271000 [2]山东科技大学,山东泰安271000

出　　处：《建筑技术开发》2022年第24期101-103,共3页Building Technology Development

摘　　要：基于金鸡湖隧道工程,采用理论和现场试验相结合的方法,探讨了PC工法复合桩围堰的变形机制和稳定性。主要得出了以下研究成果:(1)围堰内降水对PC工法组合桩围堰各个监测点的变形状况有较大影响。(2)各监测点的变形与围堰所在的位置有关,其中,在围堰中心的测点最大,在岸坡附近的测点变化最小。(3)围堰降水时以400~500 mm/d的降水量为宜,过高的降水量会使围堰的变形迅速增大,严重地影响到围堰的安全。Based on the Jinji Lake Tunnel Project,the deformation mechanism and stability of the PC method composite pile cofferdam are discussed by combining theory and field experiment.The following research results are mainly obtained:(1)Precipitation in the cofferdam has a greater impact on the deformation status of each monitoring point of the PC method combined pile cofferdam.(2)The deformation of each monitoring point is related to the location of the cofferdam,of which the measurement point in the center of the cofferdam is the largest,and the measurement point near the shore slope is the least changed.(3)When the cofferdam is precipitation,it is advisable to reduce the precipitation of 400~500 mm/d,and excessive precipitation will make the deformation of the cofferdam increase rapidly,which will seriously affect the safety of the cofferdam.

关 键 词：PC工法组合桩围堰 变形监测 降水速度 

分 类 号：TU74[建筑科学—建筑技术科学]